Migration to and from Trinity County, California
Where Trinity County residents came from and where they went over the 5-year window 2016-2020. Census ACS County-to-County Migration Flows, 2020 5-yr (frozen vintage).
Total inflow
1,039
people moved in (5-yr)
Total outflow
721
people moved out (5-yr)
Net migration
+318
inflow minus outflow
Top 10 counties people moved IN from
| Origin | State / Region | People (5-yr) |
|---|---|---|
| Shasta County | California | 333 |
| Humboldt County | California | 155 |
| Missoula County | Montana | 134 |
| Hennepin County | Minnesota | 66 |
| Brooklyn Center City | Hennepin County, Minnesota | 66 |
| Siskiyou County | California | 31 |
| Lassen County | California | 29 |
| San Diego County | California | 25 |
| Los Angeles County | California | 24 |
| New York County | New York | 19 |
Top 10 counties people moved OUT to
| Destination | State / Region | People (5-yr) |
|---|---|---|
| Humboldt County | California | 178 |
| Sacramento County | California | 88 |
| Grant County | Kansas | 51 |
| Madera County | California | 42 |
| Tuolumne County | California | 42 |
| Shasta County | California | 40 |
| Douglas County | Nevada | 23 |
| Lane County | Oregon | 23 |
| San Diego County | California | 21 |
| Thurston County | Washington | 21 |
Explore Trinity County
- Business data for Trinity CountyConstruction sector establishments, employment, payroll
- Cities in CaliforniaACS demographic profiles for places statewide
- ZIP code lookupSearch demographic data by ZIP code
- Opportunity IndexRank counties by business growth potential
- Federal contracts in CAGovBids: RFPs, awards, NAICS matching
- New business filings in CaliforniaNewFilings: fresh SOS registrations
Methodology
- Counts represent the number of people aged 1+ who reported a different residence at the survey reference date than they did one year earlier, aggregated across the 5-year sample window 2016-2020.
- Outbound (OUT) flows are reported less frequently than inbound (IN) because the survey captures the destination side of each move. Many county pairs have null OUT counts, which is normal.
- "Total inflow" sums the published MOVEDIN counts across all origin counties, including foreign-region inflows (Africa, Asia, Central America, etc.). It is not the same as net population change.
- Frozen vintage. The Census Bureau has not released a newer county-to-county migration flows file. The 2020 5-yr vintage (covering 2016-2020) is the latest available as of build date.
Source: U.S. Census Bureau, American Community Survey, County-to-County Migration Flows: 2016-2020. Vintage: 2020 5-yr. Generated: 2026-05-28. FIPS: 06105.